C++ Graphics pro

Program to change the foreground colors and draw circles on the screen

#include 

#include 

#include 

#include 

void main (int)

{

int gdriver=Detect,gmode,errorcode; 

int midx,midy,x;

initgraph(&gdriver,&gmode,"d:\\bc3\\bgi");

errorcode=graphresult();

if(errorcode!=grOk)

{

printf("Graphics error occurred : %s \n",grapherrormsg(errorcode));

printf("Press any key to stop : ");

getch();

exit(1); 

}

for(x=15;x>=0;x--)

{

setcolor(x);

circle(20+(x*40),200,15);

getch();

}

cleardevice(); 

circle(200,200,50);

getch();

closegraph();

}

Program to change the background colors on the screen

#include 

#include 

#include 

#include 

void main (int)

{

int gdriver=Detect,gmode,errorcode; 

int midx,midy,x;

initgraph(&gdriver,&gmode,"d:\\bc3\\bgi");

errorcode=graphresult();

if(errorcode!=grOk)

{

printf("Graphics error occurred : %s \n",grapherrormsg(errorcode));

printf("Press any key to stop : ");

getch();

exit(1); 

}

for(x=0;x<=15;x++)

{

setbkcolor(x);

getch();

}

closegraph();

}

Program to draw circles

#include 

#include 

#include 

#include 

#include 

#include 

void main()

{

clrscr();

int gd=Detect,gm,errorcode; 

initgraph(&gd,&gm,"d:\\bc3\\bgi"); 

errorcode=graphresult();

if (errorcode!=grOk)

{

cout << "Graphics error occured : \n" << grapherrormsg(errorcode) << endl;

cout << "Press any key to stop : ";

getch();

exit(1);

}

circle(200,200,50); 

getch();

circle(300,203,40); 

getch();

circle(500,303,80); 

getch();

closegraph();

}

Program to draw 2 rectangles and fill 1 of them

#include 

#include 

#include 

#include 

#include 

#include 

void main()

{

  clrscr();

  int gd = Detect,gm,errorcode; 

  initgraph (&gd, &gm, "d:\\bc3\\bgi"); 

  errorcode = graphresult();

  if (errorcode != grOk)

    {

      cout << "Graphics error occured : \n" << grapherrormsg(errorcode) << endl;

      cout << "Press any key to stop : ";

      getch();

      exit(1);

    }

  rectangle(300, 300, 600, 400);

  rectangle(100, 100, 200, 200);

  getch();

  floodfill(120, 120, White);

  getch();

  closegraph();

}

Program to enter an integer and print out its successor

#include 

#include 

void value(int);

void main()

{

clrscr();

int x;

cout << "Enter an integer : ";

cin>>x;

cout << "The successor of " << x << " is ";

value(x);

getch();

}

void value(int x)

{

x++;

cout << x << "." << endl;

}

Program to enter an integer and output the cube of that integer

#include 

#include 

int cube(int x); 

void main()

{

clrscr();

int a;

cout << "Enter an integer : ";

cin>>a;

cout << "The cube of " << a << " is : " << cube(a) << endl; 

getch();

}

int cube(int x)

{

int y;

y=x*x*x;

return(y);

}

Output

      The cube of 8 is : 512